Sunrays falling on a concave mirror after reflection are allowed to fall on peice of paper.The paper start burning.What is the focal length of the mirror?
Answers
Answered by
3
You need to know the distance to the paper and this will be the focal length since the light rays are focussed to a point at this distance.
shauryasingh40:
ok
Answered by
1
- Without the given numerical distance it can't be say.. But if we know the distance of focal length then it could be very easy for us
ok
Similar questions
English,
6 months ago
Computer Science,
6 months ago
Business Studies,
6 months ago
Social Sciences,
1 year ago